Class LightConstants

Falloff Default: light is falling off following the material specification: standard material is using standard falloff whereas pbr material can request special falloff per materials.

Falloff gltf: light is falling off as described in the gltf moving to PBR document to enhance interoperability with other engines.

Falloff Physical: light is falling off following the inverse squared distance law.

Falloff Standard: light is falling off like in the standard material to enhance interoperability with other materials.

Each light type uses the default quantity according to its type: point/spot lights use luminous intensity directional lights use illuminance

lux (lm/m^2)

nit (cd/m^2)

candela (lm/sr)

lumen (lm)

If every light affecting the material is in this lightmapMode, material.lightmapTexture adds or multiplies (depends on material.useLightmapAsShadowmap) after every other light calculations.

material.lightmapTexture as only lighting no light calculation from this light only adds dynamic shadows from this light

material.lightmapTexture as only diffuse lighting from this light adds only specular lighting from this light adds dynamic shadows

Light type const id of the directional light.

Light type const id of the hemispheric light.

Light type const id of the point light.

Light type const id of the spot light.